Huawei Technologies Co., Limited

Wenquan Hu

Bengt Lindoff

Meng Hua

Neng Wang

Shurong Jiao

Rama Kumar Mopidevi

Qian Zhang

Thorsten Schier

Jingxin Wei

Gustaf Claeson

Chaitanya Tumula

Xiaolei Tie

Zongjie Wang

Jinlin Peng

Gengshi Wu

Yang Liu

Huan Zhou

Sha Hu

Weiming Duan

Johan Uden

Stefan Recknagel

Panayiotis Papadimitriou

Xiaoyan Bi

The present disclosure relates to client devices and methods for link failure recovery in discontinuous reception (DRX) in connected mode (C-DRX). One example client device is configured to perform beam/link monitoring according to a link recovery procedure if the client device is in a C-DRX mode operation with a network access node, where a configured beam failure detection (BFD) timer of the link recovery procedure is a function of a periodicity of beam failure indications.

Link failure recovery in C-DRX mode

Example methods and client devices and network access nodes for link failure recovery in connected-mode-discontinuous-reception (C-DRX) mode are described. In one example method, the client device performs beam/link monitoring according to a first link recovery procedure if the client device is in non-discontinuous-reception (non-DRX) mode operation with a network access node. The client device performs beam/link monitoring according to a second link recovery procedure if the client device is in C-DRX mode operation with the network access node.

The disclosure relates to performing phase compensation at a transmitter. A processing device for a network access node generates a phase compensated modulation symbol based on at least one first modulation symbol and at least on one of a frequency offset parameter and a time offset parameter. The frequency offset parameter may be determined based on an offset between a reference frequency f0 and a DC (0 Hz) frequency such that the frequency offset parameter corresponds to the reference frequency f0. Also, the reference frequency f0 can be at least partly based on the carrier of up-conversion frequency used by the processing device and the reference frequency f0 can be the carrier for up-conversion frequency. The phase compensated symbol is transmitted to a receiver, such as a client device. Furthermore, the disclosure also relates to corresponding methods and a computer program.

Processing device for a network access node for generating phase compensated modulation symbols

The present disclosure relates to a network access node and a client device for content type indication. The network access node selects a subset of bits among a set of bits in a second data packet associated with the first data packet based on the content type for the first data packet. The network access node scrambles the selected subset of bits with a first scrambling sequence associated with an identity of the client device. The network access node transmits the first data packet and the second data packet to the client device (). Upon reception of the first data packet and the second data packet, the client device descrambles the scrambled subset of bits in the second data packet using a first scrambling sequence associated with an identity of the client device to determine the content type for the first data packet.

Network access node and a client device for content type indication

A receiving device for a wireless communication system, is configured to: monitor a reference signal associated with a control channel, the control channel being associated with a serving beam link; determine a channel quality measure based on the reference signal; and declare a beam link failure for the serving beam link based on the channel quality measure and a configuration of the control channel.

Receiving device and a method thereof

The application relates to maintaining time-synchronization of a wireless connection between a network access node and a client device. The wireless connection may be configured for services with latency constraints. In one example, based on an expiry of a time alignment timer for the client device, the network access node transmits a control message to the client device. The control message instructs the client device to transmit a response signal to the network access node. The response signal can be used by the network access node to determine the timing advance for the wireless connection and adjust the timing advance.

Network access node and client device for maintaining time-synchronization

Method is provided, including: determining, by a base station, a current time period in which an end moment of a current control channel is located in a first transmission time interval (TTI), where the first TTI includes at least two time periods, and a start moment of a data channel corresponding to a control channel that ends in each of the at least two time periods is located in a different TTI; sending, by the base station to user equipment in the first TTI, control information carried on the current control channel, where the control information is configured to schedule a current data channel corresponding to the current control channel; determining, by the base station, a second TTI in which a start moment of the current data channel is located; and exchanging, by the base station, data of the current data channel with the user equipment in the second TTI.

Scheduling a data channel corresponding to a control channel

A processing device for a client device obtains a set of reference signal configurations for a set of serving downlink beams. Each reference signal configuration of the set of reference signal configurations is associated with a respective serving downlink beam of the set of serving downlink beams. Each reference signal configuration of the set of reference signal configurations also includes a reference signal periodicity. The processing device further performs beam monitoring on the set of serving downlink beams based on the reference signal periodicities of the set of reference signal configurations.

Processing device for beam monitoring on serving downlink beams and methods thereof

It is an object to provide a procedure for handling failure of a subset of serving beam pair links in wireless radio communication. A client device is configured to monitor, independently, a link quality of each serving downlink (DL) beam pair link (BPL) of the client device; detect at least one failed DL BPL based on the monitoring, where the at least one failed DL BPL is a subset of the monitored serving DL BPLs; choose an uplink, UL, BPL, where the chosen UL BPL corresponds to an available serving DL BPL of the monitored serving DL BPLs; and transmit a beam report within a predetermined time period from the detection through a non-contention-based channel using the chosen UL BPL, where the beam report indicates the at least one failed DL BPL. A client device, a network device, methods and a computer program are included.

Handling failure of a subset of serving beam pair links

According to a first aspect, a client device is configured to: transmit a beam report, for example to a network device, wherein the beam report comprises information about a set of N transmit, Tx, beams in a downlink and measurement values related to the N Tx beams; obtain information about selected K Tx beams being a subset of the set of N Tx beams; obtain mapping information between K indicators and the selected K Tx beams, wherein each of the K indicator identifies one of the selected K Tx beams; and receive, for example from the network device, a downlink, DL, signal using the obtained information about the selected K Tx beams and the mapping information. According to another aspect a network device is provided. According to another aspects methods of operating the devices are provided and a computer program.

Indicating beams for wireless communication

Method is provided, including: determining, by a base station, a current time period in which an end moment of a current control channel is located in a first transmission time interval TTI, where the first TTI includes at least two time periods, and a start moment of a data channel corresponding to a control channel that ends in each of the at least two time periods is located in a different TTI; sending, by the base station to user equipment in the first TTI, control information carried on the current control channel, where the control information is configured to schedule a current data channel corresponding to the current control channel; determining, by the base station, a second TTI in which a start moment of the current data channel is located; and exchanging, by the base station, data of the current data channel with the user equipment in the second TTI.

Embodiments of the present disclosure provide a data transmission method and apparatus. The method includes sending, by a base station to UE, a downlink control channel used to schedule downlink data. The method further includes indicating, by the base station, a first time-frequency resource domain and a second time-frequency resource domain using the downlink control channel. A downlink data channel is sent on a time-frequency resource that is in the first time-frequency resource domain and that does not belong to the second time-frequency resource domain.

Data transmission method and apparatus

In certain embodiments, a method includes generating a first signal and a second signal. The first signal includes at least one first sub-signal, and the second signal includes at least one second sub-signal. A subcarrier frequency spacing of the first sub-signal is M times as large as a subcarrier frequency spacing of the second sub-signal. The method further includes separately sending each first sub-signal and each second sub-signal. In a range of a first preset frequency apart from a reference subcarrier frequency, all the second sub-signals sent on a subcarrier corresponding to a subcarrier frequency whose difference from the reference subcarrier frequency is a non-integer multiple of the subcarrier frequency spacing of the first signal are zero signals. The reference subcarrier frequency is a subcarrier frequency of the first sub-signal adjacent to the second signal in a frequency domain.

Method and apparatus for implementing data transmission

This application discloses a control information sending method, a data block transmission method, and a related apparatus. The control information sending method in this application is used to schedule multiple transmission time intervals TTIs for data transmission, and the multiple TTIs include at least a first TTI and a second TTI. The method includes: generating first control information, where the first control information is partial control information required for scheduling each of the multiple TTIs; generating second control information, where the second control information is remaining control information, other than the first control information, in complete control information for scheduling the first TTI; and generating third control information, where the third control information is partial control information required for scheduling the second TTI, where the first control information and the third control information are corresponding to complete control information required for scheduling the second TTI.

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Lund, Sweden

Wenquan Hu